Research Article
A Dictionary Learning Method with Total Generalized Variation for MRI Reconstruction
Table 1
Reconstruction PSNR (dB) and HFEN values at different undersampling factors with the same pseudo radial sampling trajectories.
| | Downsampling factor | 20-folder | 10-folder | 8-folder | 6-folder | 4-folder | 2.5-folder |
| | DLMRI | 31.86 (1.56) | 37.17 (0.66) | 39.45 (0.40) | 41.01 (0.26) | 43.92 (0.12) | 48.60 (0.05) | | SHTGV | 30.92 (1.70) | 37.31 (0.71) | 40.06 (0.44) | 41.85 (0.31) | 44.82 (0.18) | 48.18 (0.12) | | DLTGV | 32.39 (1.48) | 38.89 (0.51) | 41.70 (0.27) | 44.30 (0.14) | 47.34 (0.06) | 51.87 (0.03) |
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